The breathing valve is a ventilation device installed on the petrochemical storage tank to prevent the overpressure in the tank or the overvacuum to damage the storage tank, prevent the flame inflow from the outside world and reduce the volatilization loss of the internal liquid.
The series of breathing valves designed by our company is scientifically compact, with large ventilation and small leakage. According to the market demand, developed breathing type, single call type, single suction type, various structural forms can be used alone, can also be configured with fire resistance device and call and suction end connection pipe. The storage tanks of different media such as oil products, chemicals and food are made of different materials, which fully meet the process requirements of the storage and transportation system. When there are insulation requirements, it can be designed as a sandwich type. For special pressure and large diameter eyeatory valve, please provide the data designed and produced by our company.
name | monoblock | MinPan | guide rod | Fire resistance layer | Sealed seat | Applicable medium |
Ⅰ | cast aluminium alloy | alufer | 1CR13 | 304 | Polytetrafluoroethylene PTFE | Oil |
Ⅱ | carbon steel | 304 | 304 | 304 | Tight tetrafluoroethylene PTFE | Oil products, chemical products |
Ⅲ | Ss304 | 304 | 304 | 304 | Polytetrafluoroethylene PTFE | chemicals |
Ⅳ | SS304L | 304L | 304L | 304L | Polytetrafluoroethylene PTFE | chemicals |
Ⅴ | Ss316 | 316 | 316 | 316 | Polytetrafluoroethylene PTFE | chemicals |
Ⅵ | SS316L | 316L | 316L | 316L | Polytetrafluoroethylene PTFE | chemicals |
Ⅶ | PP | PP | PP | - | PP | chemicals |
Ⅷ | PVC | PVC | PVC | - | PP | chemicals |
pressure rating | A | B | C | D |
Call out the pressure | +355Pa(36mmH+O) | +980Pa(100mmH+O) | +1765Pa(180mmH+O | By the user |
Calling pressure | -295Pa(30mmH+O) | -295Pa(30mmH+O) | -392Pa(40mmH |O) | By the user |
code name | pressure rating | Each each capacity of m3/h | |||||
50 | 80 | 100 | 150 | 200 | 250 | ||
A | +355 | 25 | 60 | 90 | 190 | 340 | 550 |
-295 | 20 | 50 | 75 | 160 | 280 | 450 | |
B | +980 | 30 | 70 | 100 | 200 | 380 | 600 |
-295 | 20 | 50 | 75 | 160 | 280 | 450 | |
C | +1765 | 40 | 95 | 140 | 280 | 500 | 800 |
-295 | 20 | 50 | 75 | 160 | 280 | 450 | |
Standard allows leakage of m³ / h | ≤0.04 | ≤0.4 |
DN | L | H |
50 | 160 | 255 |
80 | 213 | 260 |
100 | 265 | 290 |
150 | 305 | 330 |
200 | 355 | 350 |
250 | 420 | 400 |
300 | 480 | 510 |
model | HXF | Negative pressure Fujian disc pressure | -295Pa--500Pa |
Nominal nominal diameter (DN) | 50-300 (see Parameter Table) | Positive pressure rush disk pressure | + 355Pa-1961Pa (special pressure user designation) |
Shell material | Carbon steel, stainless steel, aluminum alloy, PP, PVC | attended mode | flange |
Fire resistance layer material | stainless steel | Flange pressure | 0.25-6.3MPa 150-300LB |
Minpan material | Carbon steel, stainless steel, aluminum alloys, PTFE, PP, PVC | Flange sealing surface | FF、RF、MFM |
The breathing valve is a ventilation device installed on the petrochemical storage tank to prevent the overpressure in the tank or the overvacuum to damage the storage tank, prevent the flame inflow from the outside world and reduce the volatilization loss of the internal liquid.
The series of breathing valves designed by our company is scientifically compact, with large ventilation and small leakage. According to the market demand, developed breathing type, single call type, single suction type, various structural forms can be used alone, can also be configured with fire resistance device and call and suction end connection pipe. The storage tanks of different media such as oil products, chemicals and food are made of different materials, which fully meet the process requirements of the storage and transportation system. When there are insulation requirements, it can be designed as a sandwich type. For special pressure and large diameter eyeatory valve, please provide the data designed and produced by our company.
name | monoblock | MinPan | guide rod | Fire resistance layer | Sealed seat | Applicable medium |
Ⅰ | cast aluminium alloy | alufer | 1CR13 | 304 | Polytetrafluoroethylene PTFE | Oil |
Ⅱ | carbon steel | 304 | 304 | 304 | Tight tetrafluoroethylene PTFE | Oil products, chemical products |
Ⅲ | Ss304 | 304 | 304 | 304 | Polytetrafluoroethylene PTFE | chemicals |
Ⅳ | SS304L | 304L | 304L | 304L | Polytetrafluoroethylene PTFE | chemicals |
Ⅴ | Ss316 | 316 | 316 | 316 | Polytetrafluoroethylene PTFE | chemicals |
Ⅵ | SS316L | 316L | 316L | 316L | Polytetrafluoroethylene PTFE | chemicals |
Ⅶ | PP | PP | PP | - | PP | chemicals |
Ⅷ | PVC | PVC | PVC | - | PP | chemicals |
pressure rating | A | B | C | D |
Call out the pressure | +355Pa(36mmH+O) | +980Pa(100mmH+O) | +1765Pa(180mmH+O | By the user |
Calling pressure | -295Pa(30mmH+O) | -295Pa(30mmH+O) | -392Pa(40mmH |O) | By the user |
code name | pressure rating | Each each capacity of m3/h | |||||
50 | 80 | 100 | 150 | 200 | 250 | ||
A | +355 | 25 | 60 | 90 | 190 | 340 | 550 |
-295 | 20 | 50 | 75 | 160 | 280 | 450 | |
B | +980 | 30 | 70 | 100 | 200 | 380 | 600 |
-295 | 20 | 50 | 75 | 160 | 280 | 450 | |
C | +1765 | 40 | 95 | 140 | 280 | 500 | 800 |
-295 | 20 | 50 | 75 | 160 | 280 | 450 | |
Standard allows leakage of m³ / h | ≤0.04 | ≤0.4 |
DN | L | H |
50 | 160 | 255 |
80 | 213 | 260 |
100 | 265 | 290 |
150 | 305 | 330 |
200 | 355 | 350 |
250 | 420 | 400 |
300 | 480 | 510 |
model | HXF | Negative pressure Fujian disc pressure | -295Pa--500Pa |
Nominal nominal diameter (DN) | 50-300 (see Parameter Table) | Positive pressure rush disk pressure | + 355Pa-1961Pa (special pressure user designation) |
Shell material | Carbon steel, stainless steel, aluminum alloy, PP, PVC | attended mode | flange |
Fire resistance layer material | stainless steel | Flange pressure | 0.25-6.3MPa 150-300LB |
Minpan material | Carbon steel, stainless steel, aluminum alloys, PTFE, PP, PVC | Flange sealing surface | FF、RF、MFM |